Malicious PDF — malware analysis report

Static analysis result for SHA-256 39e8f11f39f4d367…

MALICIOUS

PDF

48.5 KB Created: 2020-08-28 15:17:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8960999c2aa97ec93ae3f9d5d00e0cc2 SHA-1: b8434c12f28d30695c48f4add7035788dd6a1fcc SHA-256: 39e8f11f39f4d3677e4103cb6598d0bdefffa6847c6b780f6ee3b4d1b5ef757e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious content. One critical heuristic identified a link to a known malicious redirector (ttraff.com), which likely leads to the download of further malware. Another heuristic flagged the PDF as a link farm, with many links pointing to Shopify-hosted PDFs, suggesting a coordinated effort to distribute malicious content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=trans+siberian+orchestra+letters+fro
    • http://files.melanieparkerphotography.com/uploads/1/3/2/8/132815367/9886208.pdf
    • http://dejanus.torontopilipinosdachurch.org/uploads/1/3/0/7/130739090/jasagipuxekiwu.pdf
    • http://files.redmoonbronxsoapsandteas.com/uploads/1/3/1/3/131379060/fezivekagexin.pdf
    • http://files.jamesbrothersstudio.com/uploads/1/3/0/8/130813095/pisomijogosoge.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/kikexixuxuwado.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/fowesiwidazaravawulobem.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/dopijerosawovarojasidiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/67511101052.pdf
    • https://cdn.shopify.com/s/files/1/0429/0750/0711/files/criminal_minds_season_13_episodes_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/9050/9975/files/tinokonusadumudedugepu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8187/3048/files/subject_verb_agreement_collective_nouns_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/4817/2710/files/recipe_for_disaster_osrs_runehq.pdf
    • https://cdn.shopify.com/s/files/1/0437/5409/4753/files/libro_de_administracion_financiera_2.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073d7.bin
01a24415ec27def22433cf0bce2caf573d6ffc88fc1ff2104a8407180a2aca60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D7 4848 bytes
font_01_sfnt_off00008432.bin
ac02b4223884d0d188bb1dcf0d1819b8d43c7f4541d088065f13080c71bec247		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8432 10000 bytes
font_02_sfnt_off0000a673.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA673 4324 bytes

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